MEITRAK T633L GPRS Protocol - GPS Muti-Network Tracking...Subproject GPRS Protocol Total Pages 49 Version V1.0 Confidential Internal Documentation MEITRACK T633L GPRS Protocol

MEITRACK T633L GPRS Protocol

Copyright © 2019 Meitrack Group All rights reserved. - 1 -


Applicable Model: T633L



Change History File Name MEITRACK T633L GPRS Protocol

Project T633L Creation Date

Update Date

2019-04-26

Subproject GPRS Protocol Total Pages 49

Version V1.0 Confidential Internal Documentation



Contents

1 T633L Command Format ........................................................................................................................................... - 5 -

1.1 GPRS Command Format ............................................................................................................................... - 5 -

1.2 Tracker Command Format ............................................................................................................................ - 5 -

1.3 Event Code .................................................................................................................................................. - 15 -

2 Command List .......................................................................................................................................................... - 16 -

3 Command Details .................................................................................................................................................... - 19 -

3.1 Real-Time Location Query (GPRS) – A10 ..................................................................................................... - 19 -

3.2 Setting a Heartbeat Packet Reporting Interval (GPRS) – A11 ...................................................................... - 19 -

3.3 Tracking by Time Interval (GPRS) – A12 ...................................................................................................... - 19 -

3.4 Setting the Cornering Report (GPRS) – A13 ................................................................................................ - 20 -

3.5 Tracking by Distance – A14 ......................................................................................................................... - 20 -

3.6 Setting the Parking Scheduled Tracking Function (GPRS) – A15 ................................................................. - 21 -

3.7 Enabling the Parking Scheduled Tracking Function (GPRS) – A16 ............................................................... - 21 -

3.8 Controlling Output 1 Status by RFID/iButton – A17 .................................................................................... - 22 -

3.9 Setting GPRS Parameters – A21 .................................................................................................................. - 22 -

3.10 Setting the DNS Server IP Address – A22 .................................................................................................. - 23 -

3.11 Setting the Standby GPRS Server – A23 .................................................................................................... - 23 -

3.12 Reading All Authorized Phone Numbers – A70 ......................................................................................... - 23 -

3.13 Setting Authorized Phone Numbers – A71 ............................................................................................... - 23 -

3.14 Setting Listen-in Phone Numbers – A72 ................................................................................................... - 24 -

3.15 Setting the Smart Sleep Mode – A73 ........................................................................................................ - 24 -

3.16 Setting a Geo-Fence – B05 ........................................................................................................................ - 25 -

3.17 Deleting a Geo-Fence – B06 ...................................................................................................................... - 25 -

3.18 Setting the Speeding Alert – B07 .............................................................................................................. - 26 -

3.19 Setting the Towing Alert – B08.................................................................................................................. - 26 -

3.20 Setting the Vibration Sensitivity Level – B09 ............................................................................................ - 27 -

3.21 Fast Setting the Towing Alert – B10 .......................................................................................................... - 27 -

3.22 Setting a Polygonal Geo-Fence – B11........................................................................................................ - 27 -

3.23 Setting the Idling Alert – B14 .................................................................................................................... - 28 -

3.24 Setting Driver Fatigue Parameters – B15 .................................................................................................. - 28 -

3.25 Setting the Consecutive Time of the Speeding Alert – B16 ...................................................................... - 29 -

3.26 Setting the Anti-Theft Function – B21 ...................................................................................................... - 29 -

3.27 Setting the Camera Timer – B30 ............................................................................................................... - 29 -

3.28 Turning off the LED Indicator – B31 .......................................................................................................... - 30 -

3.29 Setting a Log Interval – B34 ...................................................................................................................... - 30 -

3.30 Setting the SMS Time Zone – B35 ............................................................................................................. - 30 -

3.31 Setting the GPRS Time Zone – B36 ........................................................................................................... - 31 -

3.32 Setting the Auto Sleep Function – B37 ..................................................................................................... - 31 -

3.33 Setting the Auto Sleep Voltage – B38 ....................................................................................................... - 31 -

3.34 Setting Event Photographing Parameters – B46 ....................................................................................... - 32 -

3.35 Determining Vehicle Status by ACC Status – B60 ...................................................................................... - 32 -

3.36 Setting SMS Event Characters – B91 ......................................................................................................... - 32 -



3.37 Setting a Photographing Event Flag – B96 ................................................................................................ - 33 -

3.38 Reading a Photographing Event Flag – B97 ............................................................................................... - 33 -

3.39 Setting Event Authorization – B99 ............................................................................................................ - 33 -

3.40 Controlling Output Status – C01 ............................................................................................................... - 34 -

3.41 Notifying the Device of Sending an SMS – C02 ......................................................................................... - 35 -

3.42 Setting a GPRS Event Transmission Mode – C03 ....................................................................................... - 35 -

3.43 Registering a Temperature Sensor Number – C40 .................................................................................... - 35 -

3.44 Deleting a Registered Temperature Sensor – C41 ..................................................................................... - 36 -

3.45 Reading the Temperature Sensor SN and Number – C42 ......................................................................... - 37 -

3.46 Setting the Temperature Threshold and Logical Name – C43 ................................................................... - 37 -

3.47 Reading Temperature Sensor Parameters – C44 ....................................................................................... - 38 -

3.48 Checking Temperature Sensor Parameters – C46 ..................................................................................... - 38 -

3.49 Setting Fuel Parameters – C47 .................................................................................................................. - 39 -

3.50 Reading Fuel Parameters – C48 ................................................................................................................ - 39 -

3.51 Setting the Fuel Theft Alert – C49 ............................................................................................................. - 40 -

3.52 Setting the Driving License Type – C50 ..................................................................................................... - 40 -

3.53 Setting Buzzer's Buzzing Time – C51 ......................................................................................................... - 40 -

3.54 Setting the Valid Time after Swiping Cards – C52 ..................................................................................... - 41 -

3.55 Setting the Microphone and Speaker – C69 ............................................................................................. - 41 -

3.56 Setting the RS232 Serial Port and Peripheral – C70 .................................................................................. - 41 -

3.57 Powering Off the Device by a Command – C76 ........................................................................................ - 42 -

3.58 Setting the Power-off Function of the Power Button – C77 ...................................................................... - 42 -

3.59 Deleting an Event in the Buffer – CFF ....................................................................................................... - 42 -

3.60 Obtaining a Picture – D00 ......................................................................................................................... - 43 -

3.61 Obtaining the Picture List – D01 ............................................................................................................... - 43 -

3.62 Deleting a Picture – D02 ........................................................................................................................... - 44 -

3.63 Taking Photos on Demand – D03 .............................................................................................................. - 44 -

3.64 Authorizing an RFID Card/iButton Key – D10 ............................................................................................ - 44 -

3.65 Authorizing RFID Cards/iButton Keys in Batches – D11 ............................................................................ - 45 -

3.66 Checking RFID/iButton Authorization – D12 ............................................................................................. - 45 -

3.67 Reading an Authorized RFID Card/iButton Key – D13 ............................................................................... - 45 -

3.68 Deleting an Authorized RFID Card/iButton Key – D14 .............................................................................. - 46 -

3.69 Deleting Authorized RFID Cards/iButton Keys in Batches – D15 ............................................................... - 46 -

3.70 Checking the Checksum of the Authorized RFID/iButton ID Database – D16 ........................................... - 46 -

3.71 Setting Harsh Acceleration and Harsh Braking Parameters – D79 ............................................................ - 47 -

3.72 Reading Device's Firmware Version and SN – E91 .................................................................................... - 47 -

3.73 Restarting the GSM and GPS Module – F00 .............................................................................................. - 47 -

3.74 Restarting the GSM Module – F01 ............................................................................................................ - 48 -

3.75 Restarting the GPS Module – F02 ............................................................................................................. - 48 -

3.76 Setting the Mileage and Run Time – F08 .................................................................................................. - 48 -

3.77 Deleting SMS or GPRS Cache Data – F09 .................................................................................................. - 48 -

3.78 Restoring Initial Settings – F11 .................................................................................................................. - 49 -



1 T633L Command Format

1.1 GPRS Command Format

The GPRS command format is as follows:

GPRS command sent from the

server to the tracker

@@,,,\r\n

GPRS command sent from the

tracker to the server

$$,,,\r\n

Command description

⚫ @@: Indicates the packet header sent from the server to the tracker. Contains 2 characters.

⚫ Data identifier: Contains 1 byte. The character type is hexadecimal, and its value ranges from 0x41 to

0x7A. The data identifier in the reply command must be the same as that of the sending command.

Otherwise, the command fails to be sent.

⚫ A comma "," is used to separate data characters. The character type is the American Standard Code for

Information Interchange (ASCII) (hexadecimal: 0x2C).

⚫ Data length: Indicates the length of characters from the first separator "," to the ending character "\r\n"

(including the first separator and the ending character). The character type is decimal.

$$,,,\r\n

⚫ IMEI: Indicates the IMEI number of the GSM module. But the number stored on the flash memory can be

changed.

⚫ Parameter table No.: When the parameter value is 0 or not set, all parameter tables are modified. When

the parameter value is 1, the basic parameter table is modified. When the parameter value is 2, roaming

parameter table 1 is modified.

⚫ Command code: Consists of letters and digits. For detail, see the chapter 3 "Command Details."

⚫ Command content: no more than 1,024 bytes.

⚫ *: This is a fixed character. Checksum: Contains 2 hexadecimal characters; indicates the sum of characters

from the packet header "$$" to the asterisk "*" (including the packet header and asterisk).

$$,,,\r\n

⚫ \r\n: Contains 2 bytes. The parameter is an ending character. Hexadecimal: 0x0D 0x0A.

⚫ $$: Indicates the packet header sent from the tracker to the server. Contains 2 bytes. Hexadecimal: 0x24

0x24.

If there are multiple commands, use the separator "," to separate them. If there is no command and the

Command content parameter is required, the separator "," needs to be remained.

1.2 Tracker Command Format

The data format is as follows:

$$,,,…\r\n

There is one or multiple data packets. When there are multiple data packets, the data is stored in the form of cache

in the flash memory after the network is disconnected. After the network is connected normally, the tracker sends

the cached data to the server in batches. When there is only one data packet, it means that this is a piece of real-



time data. The following is an example of data including only one data packet.

The command content in CCE format is as follows:

Parameter Description Example

@@ / $$ @@: Indicates the GPRS data packet header

sent from the server to the tracker. The header

type is ASCII (hexadecimal: 0x40).

$$: Indicates the GPRS data packet header sent

from the tracker to the server. The header type

is ASCII (hexadecimal: 0x24).

Hexadecimal: 0x24 0x24

ASCII: $$

Data identifier Contains 1 byte. The type is the ASCII, and its

value ranges from 0x41 to 0x7A.

Hexadecimal: 0x47

ASCII: G

Data length Unit: byte. Type: decimal. Indicates the length

of characters from the first separator "," to the

ending character "\r\n" (including "," and

"\r\n"), that is, the content underlined below.

$$,,,…\r\n


0x35

ASCII: 205

IMEI Indicates the tracker's IMEI number. It has 15

digits generally.


0x38 0x39 0x39 0x38 0x30

0x33 0x33 0x320x 34 0x32

0x33 0x33 0x36

ASCII: 868998033242336

Command type Indicates the type of commands in the tracker

protocol.


0x45

ASCII: CCE

The following data is hexadecimal:

Number of remaining cache

records

Contains 4 bytes; hexadecimal; little-endian 0x00 0x00 0x00 0x00

The number of remaining

cache records is 0.

Number of data packets Contains 2 bytes; hexadecimal; little-endian 0x01 0x00

The entire message

contains only data packet.

The following is the detailed data of each data packet which needs to be parsed by using hexadecimal

numbers. This protocol only describes data including only one data packet.

Length of the current data

packet

Contains 2 bytes; hexadecimal; little-endian.

Indicates the length of characters from the

"total number of ID in the current data packet"

parameter to the last parameter ID of the

current data packet.

0xAB 0x00

The length of the current

data packet is 171 bytes.

Total number of ID in the Contains 2 bytes; hexadecimal; little-endian 0x2E 0x00



current data packet There are 46 ID numbers in

the data packet.

Number of 1-byte

parameter ID

Value range: 0x00–0xFF

The length of the following parameter ID

numbers is 1 byte.

0x0E

There are 14 parameter ID

numbers whose length is 1

byte.

0x00: The current data

packet does not contain

any parameter ID number

whose length is 1 byte.

Event code Parameter

ID: 0x01

For details, see the section 1.3 "Event Code."

Data type: BYTE

0x23

The event code is 35.

GPS

positioning

status

Parameter

ID: 0x05

0x01: The GPS positioning is valid.

0x00: The GPS positioning is invalid.

Data type: BYTE

0x01

The GPS positioning is

valid.

Number of

satellites

Parameter

ID: 0x06

Indicates the number of received GPS satellites.

Data type: BYTE

0x0A

The number of received

GPS satellites is 10.

GSM signal

strength

Parameter

ID: 0x07

Value range: 0x00–0x31

Data type: BYTE

0x1C

The GSM signal strength is

28.

Output port

status

Parameter

ID: 0x14

Indicates the status values of eight output

ports.

Bits 0–7 correspond to status of output ports

1–8.

Data type: BYTE

0x00

Converted to binary digits:

0000 0000

Output ports 1–8 is

inactive.

Geo-fence

number

Parameter

ID: 0x1B

The data is available only when the GPRS event

code is 20 or 21.

Data type: BYTE

0x00

No Enter Geo-fence or Exit

Geo-fence alert is

generated.

Temperature

sensor No.

Parameter

ID: 0x27

07

Indicates temperature sensor 7.


code is 50 or 51.

Data type: BYTE

Clutch switch Parameter

ID:

0x93

01: The clutch pedal is pressed.

00: The clutch pedal is released.

Upload data after reading it.

Data type: BYTE

0x00

The clutch pedal is

released.

Tachograph

performance

Parameter

ID:

0x94

01: performance analysis

00: normal performance


Data type: BYTE

0x00

The tachograph

performance is normal.



Parking brake

switch

Parameter

ID:

0x95

01: Apply the brake.

00: Do not apply the brake.


Data type: BYTE

0x00

Do not apply the brake.

Cruise control

system

Parameter

ID:

0x96

01: The cruise control system is switched on.

00: The cruise control system is switched off.


Data type: BYTE

0x00

The cruise control system is

switched off.

Accelerator

pedal position

(%)

Parameter

ID:

0x97

1-byte hexadecimal data


Data type: BYTE

0x14

You press down 20% of the

accelerator pedal of your

vehicle.

CAN bus fuel

level (%)

Parameter

ID:

0x9D



Data type: BYTE

0x23

The fuel level left is 35%.

Actual engine

torque (%)

Parameter

ID:

0x9E



Data type: SINT8

0x12

The actual engine torque is

18%.

Actual engine

torque at

current speed

(%)

Parameter

ID:

0xA1



Data type: BYTE

0x12

The actual engine torque at

current speed is 18%.

Number of 2-byte

parameter ID



numbers is 2 bytes.

0x10



bytes.




whose length is 2 bytes.

Speed Parameter

ID: 0x08

Unit: km/h; little-endian

Data type: WORD

0x15 0x00

The driving speed is 21

km/h.

Driving

direction

Parameter

ID: 0x09

The unit is degree.

When the parameter value is 0, the direction is

due north. The parameter value ranges from 0

to 359. Little-endian.

Data type: WORD

0x66 0x00

The driving direction is 102

degrees.

Horizontal

dilution of

precision

(HDOP)

Parameter

ID: 0x0A

Value range: 5–999

Unit: 1/10; little-endian

Data type: WORD

0x13 0x00

The HDOP is 1.9.

Altitude Parameter Unit: meter; little-endian 0x2D 0x00



ID: 0x0B Data type: SINT16 The altitude is 45 meters.

AD1 Parameter

ID: 0x16

Analog ; little-endian

Voltage formula of analog: AD1/100

Data type: WORD

0x00 0x00

Convert the digits to

decimal digits: 0

0/100 = 0

The AD1 voltage is 3.95 V.

AD2 Parameter

ID: 0x17



Data type: WORD

0x00 0x00


decimal digits: 0

0/100 = 0


AD3 Parameter

ID: 0x18



Data type: WORD

0x00 0x00


decimal digits: 0

0/100 = 0


AD4 Parameter

ID: 0x19

Battery analog ; little-endian


When the battery power is full, the voltage is

4.2 V. When the battery power is empty, the

voltage is 3.4 V.

Formula of remaining battery power (%):

(AD4/100-3.4)/0.8 x 100%

Data type: WORD

0xA0 0x01


decimal digits: 416

416/100 = 4.16

The voltage is 4.16V.

The remaining battery

power is 99%.

AD5 Parameter

ID: 0x1A

External power analog ; little-endian


Note: When the external power supply is

disconnected, the voltage of AD5 is about 2 V

instead of 0.

Data type: WORD

0x51 0x05


decimal digits: 1366

1366/100 = 13.66

The voltage of the external

power supply is 13.66 V.

Fuel level (%) Parameter

ID: 0x29

Little-endian. After the digits are converted to

decimal digits, the converted value divided by

10000 is the actual value.

Data type: WORD

0x7A 0x0D



The fuel level is 34.50%.

AD6 Parameter

ID: 0x41



Data type: WORD

0x00 0x00


decimal digits: 0

0/100 = 0

The AD6 voltage is 0.

Vehicle speed

(based on the

tachograph)

(km/h)

Parameter

ID: 0x91



Data type: WORD

0x15 0x00


decimal digits: 21

The vehicle speed is 21



km/h.

Vehicle speed

(based on the

wheel) (km/h)

Parameter

ID: 0x92



Data type: WORD

0x15 0x00


decimal digits: 21

The vehicle speed is 21

km/h.

Engine speed

(rpm)

Parameter

ID: 0x99



Data type: WORD

0x12 0x04



The engine rotational

speed is 1042 rpm.

Engine coolant

temperature

(deg C)

Parameter

ID: 0x9C



Data type: SINT16

0x32 0x00


decimal digits: 50

The engine coolant

temperature is 50°C.

Ambient air

temperature

(deg C)

Parameter

ID: 0x9F



Data type: SINT16

0x28 0x00


decimal digits: 40

The ambient air

temperature is 40°C.

Number of 4-byte

parameter ID



numbers is 4 bytes.

0x0F



bytes.




whose length is 2 bytes.

Latitude Parameter

ID: 0x02

Unit: millionth of a degree; little-endian

Data type: SINT32

0xE6 0x87 0x57 0x01



The latitude is 22.513638

degrees.

Longitude Parameter

ID: 0x03

Unit: millionth of a degree; little-endian

Data type: SINT32

0XE6 0x5F 0xCC 0x06



The longitude is

114.057190 degrees.

Date and time Parameter

ID: 0x04

Contains 4 bytes; little-endian

Unit: second

Starting time: 1 January, 2000, 00:00:00 am.

Data type: DWORD

0xEA 0x8D 0xA7 0x22





Mileage Parameter

ID: 0x0C

Indicates the total mileage.

Unit: meter; little-endian

Data type: DWORD

0x56 0x05 0x00 0x00



The total mileage is 1366

meters.

Run time Parameter

ID: 0x0D

Indicates the total time.

Unit: second; little-endian

Data type: DWORD

0x96 0x1B 0x00 0x00



The run time is 7062

seconds.

System flag Parameter

ID: 0x1C


code is 35.

Bit 0: Whether to modify the EEP2 parameter.

When the parameter value is 1, the EEP2

parameter is modified.

Bit 1: Indicates the ACC status. When the

parameter value is 1, the ACC is on.

Bit 2: Indicates the anti-theft status. When the

parameter value is 1, the tracker is in the

arming state.

Bit 3: vibration flag. When the parameter value

is 1, the tracker is vibrating.

Bit 4: moving flag. When the parameter value is

1, the tracker is moving.

Bit 5: Whether to connect the external power

supply. When the parameter value is 1, the

external power supply is connected.

Bit 6: Whether the tracker is charging. When

the parameter value is 1, the tracker is

charging.

Bit 7: Whether to enable the sleep mode.

When the parameter value is 1, the sleep mode

is enabled.

Bit 8: Whether to connect the FMS. When the

parameter value is 1, the FMS is connected.

Bit 9: Whether to enable the FMS function.

When the parameter value is 1, the function is

enabled.

Bits 10–31: reserved.

Data type: DWORD

0x00 0x00 0x03 0x00


0000 0000 0000 0000 0000

0011 0000 0000

The tracker supports the

FMS function and is

connected to the FMS.

RFID ID Parameter

ID: 0x25

Indicates the ID number of a RFID card.


code is 37.

Data type: DWORD

0xD7 0x9D 0xD1 0x00

The RFID ID number is

13737431.



Input port

status

Parameter

ID: 0x42

Bits 0–31 correspond to status of input ports 1–

31.

When the parameter value is 0, the port is

inactive.

When the parameter value is 1, the port is

active.

Data type: DWORD

0x00 0x00 0x00 0x04


0000 0000 0000 0000 0000

0000 0000 0100

The input port 3 is active,

while other input ports are

inactive.

Total fuel

consumption

(L)

Parameter

ID: 0x98


Data type: DWORD

0x01 0x02 0x00 0x00


decimal digits: 513

The total fuel consumption

is 513 L.

Total engine

run time (h)

Parameter

ID: 0x9A




Data type: DWORD

0x12 0x34 0x00 0x01



The total engine run time is

1679054.6 hours.

High

resolution

vehicle

distance (m)

Parameter

ID: 0x9B


Data type: DWORD

0x11 0x22 0x00 0x00



The total mileage is 8712

meters.

High

resolution

total fuel

consumption

(L)

Parameter

ID: 0xA0




Data type: DWORD

0x12 0x00 0x01 0x00



The total fuel consumption

is 65.554 L.

Fuel

consumption

rate (L/H)

Parameter

ID: 0xA2




Data type: DWORD

0x12 0x00 0x02 0x00



The fuel consumption rate

is 1310.90 L/H.

Axle weight

(kg)

Parameter

ID: 0xA3




Data type: DWORD

0x12 0x34 0x00 0x00



The axle weight is 1333.0

kg.

Service

distance (km)

Parameter

ID: 0xA4


Data type: SINT32

0x22 0x30 0x00 0x00



The service distance is

12322 km.

Instantaneous Parameter Little-endian. After the digits are converted to 0x12 0x56 0x00 0x00



fuel

consumption

(km/L)

ID: 0xA5 decimal digits, the converted value divided by


Data type: DWORD



The instantaneous fuel

consumption is 22.034

km/L.

Number of unfixed-byte

parameter ID



numbers is 8 or 12 bytes, or is unfixed. The

ordering of parameter ID numbers is not fixed.

For details, see the parameter ID table.

0x01

There is one unfixed-byte

parameter ID number.




whose length is unfixed.

Current base

station info

Parameter

ID: 0x0E

Data length: hexadecimal; indicates the length

of the base station data. Unit: byte.

MCC: 16-bit unsigned; little-endian; indicates

the Mobile Country Code.

MNC: 16-bit unsigned; little-endian; indicates

the Mobile Network Code.

LAC: 16-bit unsigned; little-endian; indicates the

Location Area Code.

CELL_ID: 32-bit unsigned; little-endian; indicates

the cell ID.

RX_LEVEL: 16-bit signed; little-endian; indicates

the signal strength.

Data type: STRUCT

0x0C 0xCC 0x01 0x01 0x00

0x45 0xA5 0x8B 0xD4 0xE9

0x01 0xBB 0xFF

0x0C: The data length is 12

bytes.

0xCC 0x01: The MCC is 460.

0x01 0x00: The MNC is 01.

0x45 0xA5: The LAC is

42309.

0x8B 0xD4 0xE9 0x01: The

cell ID is 32101515.

0xBB 0xFF: The signal

strength is -69 dbm.

Picture name Parameter

ID: 0x28


code is 39.

Time unit: second. Start time: 1 January, 2000,

00:00:00 am.

Data type: STRUCT

0xCB 0x0F 0x23 0x19 0x01

0x1E 0x0C 0x00

There are two pieces of

DWORD data: 0x19230FCB

0x000C1E01.

0x19230FCB: Indicates the

date and time, that is,

130513024323.

0x000C1E01: Indicates the

last part of the file

name ,that is, C1E01.

The file name is

130513024323_C1E01.jpg.

Temperature

sensor 1

Parameter

ID: 0x2A

Little-endian

Data type: STRUCT

0x01 0x09 0x1A

01: Indicates sensor 01.

09 1A: signed; 2 bytes;



little-endian. The

temperature is 66.65°C.

Temperature

sensor 2

Parameter

ID: 0x2B

Little-endian

Data type: STRUCT

0x01 0x09 0x1A



little-endian. The


Temperature

sensor 3

Parameter

ID: 0x2C

Little-endian

Data type: STRUCT

0x01 0x09 0x1A



little-endian. The


Temperature

sensor 4

Parameter

ID: 0x2D

Little-endian

Data type: STRUCT

0x01 0x09 0x1A



little-endian. The


Temperature

sensor 5

Parameter

ID: 0x2E

Little-endian

Data type: STRUCT

0x01 0x09 0x1A



little-endian. The


Temperature

sensor 6

Parameter

ID: 0x2F

Little-endian

Data type: STRUCT

0x01 0x09 0x1A



little-endian. The


Temperature

sensor 7

Parameter

ID: 0x30

Little-endian

Data type: STRUCT

0x01 0x09 0x1A



little-endian. The


Temperature

sensor 8

Parameter

ID: 0x31

Little-endian

Data type: STRUCT

0x01 0x09 0x1A



little-endian. The


Magnetic card

reader

Parameter

ID: 0x39

RfidLen: Indicates the length of the magnetic

card's ID number; contains 1 byte.

RfidData: Indicates the detailed data of the

magnetic card; contains at most 160 bytes.

Data type: STRUCT



The current data packet ends here.

* Contains 1 byte. It is used to separate the

command content from the checksum.

ASCII (hexadecimal: 0x2A)

*

Checksum Contains 2 bytes.

Indicates the sum of hexadecimal characters

from the packet header "$$" to the asterisk "*"

(including the packet header and asterisk).

$$,,,\r\n

If the sum result is 0x27

0x62, send the checksum

62 (low byte 0x62) in ASCII

format, that is, 0x36 0x32.


ASCII: 62

\r\n Contains 2 bytes. This is an ending character.

The type is ASCII (hexadecimal: 0x0D,0x0A).

\r\n

1.3 Event Code

Event Code Event Default SMS Header (At Most 16 Bytes)

1 SOS Pressed SOS

2 Input 2 Active Door Open

3 Input 3 Active Ignition On

4 Input 4 Active In4 Active





9 Input 1 Inactive In1 Inactive

10 Input 2 Inactive Door Close

11 Input 3 Inactive Ignition Off






17 Low Battery Low Battery

18 Low External Battery Low Ext-Battery

19 Speeding Speeding

20 Enter Geo-fence Enter Fence N (N means the number of the fence)

21 Exit Geo-fence Exit Fence N (N means the number of the fence)

22 External Battery On Ext-Battery On

23 External Battery Cut Ext-Battery Cut

24 GPS Signal Lost GPS Signal Lost



25 GPS Signal Recovery GPS Recovery

26 Enter Sleep Enter Sleep

27 Exit Sleep Exit Sleep

28 GPS Antenna Cut GPS Antenna Cut

29 Device Reboot Power On

31 Heartbeat /

32 Cornering Cornering

33 Track By Distance Distance

34 Reply Current (Passive) Now

35 Track By Time Interval Interval

36 Tow Tow

37 RFID (change uart rate)

41 Stop Moving Stop Moving

42 Start Moving Start Moving

50 Temperature High Temp High

51 Temperature Low Temp Low

52 Full Fuel Full Fuel

53 Low Fuel Low Fuel

54 Fuel Theft Fuel Theft

70 Reject Incoming Call /

72 Auto Answer Incoming Call /

82 Refuelling Refuelling

83 Ult-Sensor Drop Ult-Sensor Drop



129 Harsh Braking Harsh Braking

130 Harsh Acceleration Fast Accelerate

133 Idle Overtime Idle Overtime

134 Idle Recovery Idle Recovery

135 Fatigue Driving Fatigue Driving

136 Enough Rest after Fatigue Driving Enough Rest

138 Speed Recovery Speed Recovery

2 Command List

Command Command Description

A10 Real-Time Location Query (GPRS)

A11 Setting a Heartbeat Packet Reporting Interval (GPRS)

A12 Tracking by Time Interval (GPRS)

A13 Setting the Cornering Report (GPRS)

A14 Tracking by Distance



A15 Setting the Parking Scheduled Tracking Function (GPRS)

A16 Enabling the Parking Scheduled Tracking Function (GPRS)

A17 Controlling Output 1 Status by RFID/iButton

A21 Setting GPRS Parameters

A22 Setting the DNS Server IP Address

A23 Setting the Standby GPRS Server

A70 Reading All Authorized Phone Numbers

A71 Setting Authorized Phone Numbers

A72 Setting Listen-in Phone Numbers

A73 Setting the Smart Sleep Mode

B05 Setting a Geo-Fence

B06 Deleting a Geo-Fence

B07 Setting the Speeding Alert

B08 Setting the Towing Alert

B09 Setting the Vibration Sensitivity Level

B10 Fast Setting the Towing Alert

B11 Setting a Polygonal Geo-Fence

B14 Setting the Idling Alert

B15 Setting Driver Fatigue Parameters

B16 Setting the Consecutive Time of the Speeding Alert

B30 Setting the Camera Timer

B31 Turning off the LED Indicator

B34 Setting a Log Interval

B35 Setting the SMS Time Zone

B36 Setting the GPRS Time Zone

B60 Determining Vehicle Status by ACC Status

B91 Setting SMS Event Characters

B99 Setting Event Authorization

C01 Controlling Output Status

C02 Notifying the Device of Sending an SMS

C03 Setting a GPRS Event Transmission Mode

C13 Sending a Message from the Platform

C40 Registering a Temperature Sensor Number

C41 Deleting a Registered Temperature Sensor

C42 Reading the Temperature Sensor SN and Number

C43 Setting the Temperature Threshold and Logical Name

C44 Reading Temperature Sensor Parameters

C46 Checking Temperature Sensor Parameters

C47 Setting Fuel Parameters

C48 Reading Fuel Parameters

C49 Setting the Fuel Theft Alert

C50 Setting the Driving License Type



C51 Setting Buzzer's Buzzing Time

C52 Setting the Valid Time after Swiping Cards

C69 Setting the Microphone and Speaker

C70 Setting the RS232 Serial Port and Peripheral

C76 Powering Off the Device by a Command

C77 Setting the Power-off Function of the Power Button

CFF Deleting an Event in the Buffer

D00 Obtaining a Picture

D01 Obtaining the Picture List

D02 Deleting a Picture

D03 Taking Photos on Demand

D10 Authorizing an RFID Card/iButton Key

D11 Authorizing RFID Cards/iButton Keys in Batches

D12 Checking RFID/iButton Authorization

D13 Reading an Authorized RFID Card/iButton Key

D14 Deleting an Authorized RFID Card/iButton Key

D15 Deleting Authorized RFID Cards/iButton Keys in Batches

D16 Checking the Checksum of the Authorized RFID/iButton ID Database

D79 Setting Harsh Acceleration and Harsh Braking Parameters

E91 Reading Device's Firmware Version and SN

F00 Restarting the GSM or GPS Module

F01 Restarting the GSM Module

F02 Restarting the GPS Module

F08 Setting the Mileage and Run Time

F09 Deleting SMS or GPRS Cache Data

F11 Restoring Initial Settings



3 Command Details

3.1 Real-Time Location Query (GPRS) – A10

GPRS Sending A10

GPRS Reply AAA,34,(-)Latitude,(-)Longitude,Date and time,Positioning status,Number of

satellites,GSM signal strength,Speed,Direction,HDOP,Altitude,Mileage,Run time,Base

station info,I/O port status,Analog input value

Description 34: Indicates the event code of the GPRS command.

Applicable Model T633L

Example

GPRS Sending @@Q25,353358017784062,A10*6A\r\n

GPRS Reply $$Q128,353358017784062,AAA,34,22.543176,114.078448,100313093738,A,5,22,2,205

,5,-14,0,60,0|0|10133|4110,0000,149|153|173|2707|914,*91\r\n

3.2 Setting a Heartbeat Packet Reporting Interval (GPRS) – A11

GPRS Sending A11,Interval

GPRS Reply A11,OK

Description The heartbeat packet function is used to keep the Transmission Control Protocol (TCP)

connection open when the interval of scheduled GPRS reporting is long.

Interval = 0: function disabled (default).

Interval = [1…65535]: function enabled. Set the heartbeat packet reporting interval. Unit:

minute.

The heartbeat function is available only in conjunction with deep sleep mode. When the

device enters the deep sleep mode, a heartbeat packet will be sent at the specified

interval. A heartbeat packet is to confirm the device is online, and positioning data is

invalid.


Example

GPRS Sending @@S28,353358017784062,A11,10*FD\r\n

GPRS Reply $$S28,353358017784062,A11,OK*FE\r\n

After the above command is sent successfully, the device will send the following GPRS

heartbeat packet to the platform every 10 minutes in sleep mode:

$$a131,353358017784062,AAA,31,22.913458,114.083183,080229123628,V,9,23,21,83,

1,18,1350,127,0|0|10133|4110,0000,169|181|184|2714|919,*60

3.3 Tracking by Time Interval (GPRS) – A12


GPRS Reply A12,OK

Description Interval unit: x10 seconds



Interval = 0: function disabled.

The maximum time interval is 65535 x 10 seconds.

Recommended value: 6 x 10 seconds


Example

GPRS Sending @@V27,353358017784062,A12,6*D5\r\n

GPRS Reply $$V28,353358017784062,A12,OK*02\r\n

After the above command is sent successfully, the device will send the following GPRS data

packet to the platform every one minute:

$$W129,353358017784062,AAA,35,22.540113,114.076141,100313094354,A,5,22,1,17

4,4,129,0,435,0|0|10133|4110,0000,166|224|193|2704|916,*BE\r\n

3.4 Setting the Cornering Report (GPRS) – A13

GPRS Sending A13,Angle

GPRS Reply A13,OK

Description When the driving angle exceeds the preset value, the device will send a GPRS data packet

with location information to the server, which ensures a smoother route on the platform.

Angle = 0: function disabled (default).

Angle = [1…359]: function enabled.

Recommended value: 30


Example

GPRS Sending @@X29,353358017784062,A13,120*37\r\n

GPRS Reply $$X28,353358017784062,A13,OK*05\r\n

After the above command is sent successfully, if the cornering angle is greater than 120

degrees, the device will send the following GPRS data packet to the server:

$$Y129,353358017784062,AAA,32,22.540968,114.077455,100313094534,A,4,22,1,166,

3,175,0,534,0|0|10133|4110,0000,141|138|159|2691|904,*D9\r\n

3.5 Tracking by Distance – A14

GPRS Sending A14,Distance

GPRS Reply A14,OK

Description Distance = 0: function disabled (default).

Distance = [1…65535]: function enabled. Set the distance. Unit: meter.

Note: When both the GPRS time interval and distance tracking functions have been set,

the "first reach first report" rule will be applied, and then both the time interval and

distance counters will be reset to 0. For example, set the time interval to 6 x 10 seconds

and distance to 200 meters. If the road is clear and the driving time is less than one

minute, a distance data packet will be reported first; if there is heavy traffic on the road

and the vehicle only drives 100 meters within one minute, a time interval data packet will

be reported first.



Recommended value: 300


Example

GPRS Sending @@D30,353358017784062,A14,1000*4A\r\n

GPRS Reply $$D28,353358017784062,A14,OK*F2\r\n

After the above command is sent successfully, if the driving distance reaches 1000 meters,

the device will send the following data packet to the server:

$$D131,353358017784062,AAA,33,22.547271,114.047405,080310080929,A,8,21,13,89

,1,12,8525,561,0|0|10133|4110,0000,163|185|186|2712|939,*31\r\n

3.6 Setting the Parking Scheduled Tracking Function (GPRS) – A15


GPRS Reply A15,OK

Description The function is available for vehicle trackers only. With the function, the number of GPRS

messages is reduced, and thus GPRS traffic is saved.

After the A15 function is set, the A16 function will be automatically enabled. For details

about engine status, see the section 3.7 "Enabling the Parking Scheduled Tracking

Function (GPRS) – A16."

Interval unit: x10 seconds

Interval = 0: function disabled.

The maximum time interval is 65535 x 10 seconds.

Note: If data needs to be sent at the specified time interval after the vehicle starts or

stops, the function needs to work with the A12 function. For details, see A12 and A16

commands.


Example

GPRS Sending @@E27,353358017784062,A15,6*C7\r\n

GPRS Reply $$E28,353358017784062,A15,OK*F4\r\n

3.7 Enabling the Parking Scheduled Tracking Function (GPRS) – A16

GPRS Sending A16,Status

GPRS Reply A16,OK

Description The function is available for vehicle trackers only. The first positive input port (high

level) of the device must be connected to engine detection. Otherwise, the function

is unavailable.

When the status value is 1, the parking scheduled tracking function is enabled, and

GPRS data is sent at the following interval:

Engine on: Data is sent at the interval of the A12 command.

Engine off: Data is sent at the interval of the A15 command.

When the status value is 0, the parking scheduled tracking function is disabled, and

GPRS data is sent at the following interval:



Engine on: Data is sent at the interval of the A12 command.

Engine off: Data is sent at the interval of the A15 command.


Example

GPRS Sending @@F27,353358017784062,A16,0*C3\r\n

GPRS Reply $$F28,353358017784062,A16,OK*F6\r\n

3.8 Controlling Output 1 Status by RFID/iButton – A17

GPRS Sending A17,X

GPRS Reply A17,OK

Description X = 1: function enabled. Before using the function, you must ensure: 1. ACC detection is

connected to input 3; 2. A RFID card has been authorized.

X = 0: function disabled (default).

For example, after swiping the authorized RFID card, you must start the engine (input 3

connects to engine detection) within one minute. If the time exceeds one minute, you

need to swipe the card again. After the engine is started, input 3 will always detect the

ACC status. If ACC ON is detected (that is, input 3 is the high level), output 1 will not

generate data. If ACC OFF is detected, wait for one minute and then swipe the authorized

RFID card to start the engine as required.

For details about how to authorize a RFID card, see commands D10–D15.


Example

GPRS Sending @@T27,353358017784062,A17,1*D3\r\n

GPRS Reply $$T28,353358017784062,A17,OK*05\r\n

3.9 Setting GPRS Parameters – A21

GPRS Sending A21,Connection mode,IP address,Port,APN,APN user name,APN password

GPRS Reply A21,OK

Description Connection mode = 0: function disabled.

Connection mode = 1: function enabled; use the TCP/IP reporting mode.

Connection mode = 2: function enabled; use the UDP reporting mode.

IP address: IP address or domain name. A maximum of 32 bytes are supported.

Port: a maximum of 5 digits

APN/APN user name/APN password: a maximum of 32 bytes respectively

If no user name and password are required, leave them blank.


Example

GPRS Sending @@H58,353358017784062,A21,1,server.meigps.com,8800,CMNET,,*A0

GPRS Reply $$H28,353358017784062,A21,OK*F4\r\n



3.10 Setting the DNS Server IP Address – A22

GPRS Sending A22,DNS server IP address

GPRS Reply A22,OK

Description An incorrect DNS server IP address may lead to GPRS data reporting failures after the A21

command is used. You can use the A22 command to set the DNS server IP address

(confirm the IP address with your domain name provider), and then use the A21

command to reset the domain name.

DNS server IP address: a maximum of 16 bytes


Example

GPRS Sending @@K38,353358017784062,A22,75.127.67.90*FD\r\n

GPRS Reply $$K28,353358017784062,A22,OK*F8\r\n

3.11 Setting the Standby GPRS Server – A23

GPRS Sending A23,IP address,Port

GPRS Reply A23,OK

Description IP address: a maximum of 32 bytes

Port: a maximum of 5 digits

When the device fails to send data to the active server set by the A21 command, data will

be automatically sent to the standby server to prevent data loss.


Example

GPRS Sending @@S44,353358017784062,A23,182.92.69.175,8800*35\r\n

GPRS Reply $$S28,353358017784062,A23,OK*01\r\n

3.12 Reading All Authorized Phone Numbers – A70

GPRS Sending A70

GPRS Reply A70,SOS phone number 1,SOS phone number 2,SOS phone number 3,Listen-in phone

number 1,Listen-in phone number 2

Description Read all authorized phone numbers.


Example

GPRS Sending @@T25, 353358017784062,A70*93\r\n

GPRS Reply $$T85,353358017784062,A70,13811111111,13822222222,13833333333,13844444444,

13855555555*21\r\n

3.13 Setting Authorized Phone Numbers – A71

GPRS Sending A71,Phone number 1,Phone number 2,Phone number 3

GPRS Reply A71,OK

Description Phone number: A phone number has a maximum of 16 bytes. If no phone numbers are



set, leave them blank. Phone numbers are empty by default.

Phone number 1: SOS phone number. When you call the device by using the phone

number, you will receive an SMS notification about the location, geo-fence alert and low

battery alert.

When the SOS button is pressed, the device will dial phone numbers 1, 2, and 3 in

sequence. It will stop dialing when a phone number responds.


Example

GPRS Sending @@U61,353358017784062,A71,13811111111,13822222222,13833333333*7D\r\n

GPRS Reply $$U28,353358017784062,A71,OK*06\r\n

3.14 Setting Listen-in Phone Numbers – A72

GPRS Sending A72,Listen-in phone number 1,Listen-in phone number 2

GPRS Reply A72,OK

Description When you call the device by using authorized listen-in phone numbers, the device will

answer the call automatically and enter the listen-in state. In this way, the device will not

make any sound.

Listen-in phone number: A maximum of two phone numbers can be set. Each phone

number has a maximum of 16 digits. If no phone numbers are set, leave them blank.

Phone numbers are empty by default.

If no phone numbers are set and commas are remained, phone numbers set before will

be deleted.


Example

GPRS Sending @@V49,353358017784062,A72,13844444444,13855555555*55\r\n

GPRS Reply $$V28,353358017784062,A72,OK*08\r\n

3.15 Setting the Smart Sleep Mode – A73

GPRS Sending A73,Sleep level

GPRS Reply A73,OK

Description Set the automatic smart sleep mode when the device is idle.

Sleep level = 0: function disabled (default).

Sleep level = 1: normal sleep. The GSM module always works, and the GPS module

occasionally enters the sleep mode. The device works 25% longer in the normal sleep

mode than that in the normal working mode. This mode is not recommended for short

interval tracking because it will affect the route precision.

Sleep level = 2: deep sleep. If no event is triggered after five minutes, the GPS module will

stop working and the GSM module will enter the sleep mode. Once an event is triggered,

the GPS and GSM modules will be woken up. The above actions will be cycled. A heartbeat

event is triggered only in the deep sleep mode and is uploaded every one hour by default.

Triggering events include the SOS alert, low power alert for internal battery, low power



alert for external battery, external power status, GPS antenna cut-off alert, towing alert,

high temperature, low temperature, fuel theft, vehicle theft, ACC ON, (button) changes

in any input port, vibration, incoming call, SMS receiving, call, and heartbeat event (GPS

invalid during heartbeat wakeup).


Example

GPRS Sending @@W27,353358017784062,A73,2*D9\r\n

GPRS Reply $$W28,353358017784062,A73,OK*0A\r\n

3.16 Setting a Geo-Fence – B05

GPRS Sending B05,Geo-fence number,Latitude,Longitude,Radius,Enter Geo-fence alert,Exit Geo-fence

alert

GPRS Reply B05,OK

Description Geo-fence number: The parameter value ranges from 1 to 8. A maximum of eight geo-

fences can be set.

Latitude: Indicates the latitude of the geo-fence center; decimal; accurate to six digits

placed after the decimal point. If there are only four digits placed after the decimal point,

add two digits 0. Otherwise, the command cannot be used successfully.

Longitude: Indicates the longitude of the geo-fence center; decimal; accurate to six digits

placed after the decimal point. If there are only four digits placed after the decimal point,

add two digits 0. Otherwise, the command cannot be used successfully.

Radius: The parameter value ranges from 1 to 4294967295. Unit: meter. Take coordinates

of the above latitude and longitude as the center point and draw a circle with this radius.

Enter Geo-fence alert = 0: function disabled.

Enter Geo-fence alert = 1: function enabled.

Exit Geo-fence alert = 0: function disabled.

Exit Geo-fence alert = 1: function enabled.


Example

GPRS Sending @@H57,353358017784062,B05,1,22.913191,114.079882,1000,0,1*96\r\n

GPRS Reply $$H28,353358017784062,B05,OK*F7\r\n

When the device exits the geo-fence (latitude: 22.913191; longitude: 114.079882; radius:

1000 meters), it will send the following GPRS data packet about an Exit Geo-fence alert

to the server:

$$J132,353358017784062,AAA,21,22.918046,114.089726,080229123812,A,10,22,12,32,

1,21,6667,847,0|0|10133|4110,0000,124|181|183|2714|922,*5A\r\n

3.17 Deleting a Geo-Fence – B06

GPRS Sending B06,Geo-fence number

GPRS Reply B06,OK

Description Geo-fence number: The parameter value ranges from 1 to 8. Only one geo-fence can be



deleted each time by sending an SMS or GPRS command.


Example

GPRS Sending @@J27,353358017784062,B06,1*C8\r\n

GPRS Reply $$J28,353358017784062,B06,OK*FA\r\n

After the above command is sent successfully, the first geo-fence will be deleted.

3.18 Setting the Speeding Alert – B07

GPRS Sending B07,Driving speed,Buzzer flag

GPRS Reply B07,OK

Description Driving speed = 0: function disabled (default).

Driving speed = [1…255]: function enabled. When the driving speed reaches the preset

value, a speeding alert will be sent. Unit: km/h.

Buzzer flag = 0: The buzzer will make a buzzing sound when the vehicle exceeding the

speed limit (default).

Buzzer flag = 1: The buzzer will not make a buzzing sound when the vehicle exceeding the

speed limit.


Example

GPRS Sending @@P28,353358017784062,B07,60*05\r\n

GPRS Reply $$P28,353358017784062,B07,OK*01\r\n

3.19 Setting the Towing Alert – B08

GPRS Sending B08,Consecutive vibration time

GPRS Reply B08,OK

Description When the device's consecutive vibration time exceeds the preset value, the device will

send an alert to an authorized phone number or the server. Before using the towing alert

function, use the A73 command to set the smart sleep level to 2 and use the B08

command to set the consecutive vibration time. Otherwise, the towing alert function will

be unavailable.

Consecutive vibration time = 0: function disabled (default).

Consecutive vibration time = [1…255]: function enabled. Set the consecutive vibration

time. Unit: second.


Example

GPRS Sending @@I27,353358017784062,B08,3*CB\r\n

GPRS Reply $$I28,353358017784062,B08,OK*FB\r\n

After the above command is sent successfully, if the device vibrates for more than three

consecutive seconds, it will send the following GPRS data packet about a towing alert to

the server:

$$K133,353358017784062,AAA,36,22.916675,114.088813,080229123718,A,10,22,61,3



1,1,21,6635,395,460|0|1013|4110,0000,164|185|181|2712|915,*A2

3.20 Setting the Vibration Sensitivity Level – B09

GPRS Sending B09,Sensitivity level

GPRS Reply B0,OK

Description Sensitivity level: The parameter value ranges from 1 to 65535. The parameter value

cannot be 0. The smaller the parameter value is, the stronger the sensitivity is.

The default parameter value is 1.


Example

GPRS Sending @@I27,353358017784062,B09,3*CC\r\n

GPRS Reply $$I28,353358017784062,B09,OK*FC\r\n

3.21 Fast Setting the Towing Alert – B10

GPRS Sending B10,Consecutive vibration time,Idling time

GPRS Reply B10,OK

Description Consecutive vibration time = 0: function disabled (default).

Consecutive vibration time = [1…255]: function enabled. Set the consecutive vibration

time. Unit: second.

Idling time: The default parameter value is 2. Unit: minute.

Idling time = 0: The power-saving mode is disabled.

Idling time = [1…255]: The power-saving function is enabled. When the idling time

exceeds the preset value, the device will enter the power-saving mode.


Example

GPRS Sending @@I29,353358017784062,B10,5,5*29\r\n

GPRS Reply $$I28,353358017784062,B10,OK*F4\r\n

3.22 Setting a Polygonal Geo-Fence – B11

GPRS Sending B11,Geo-fence number,Latitude 1,Longitude 1,Latitude 2,Longitude 2...Latitude

N,Longitude N,Enter Geo-fence alert,Exit Geo-fence alert

GPRS Reply B11,OK

Description Geo-fence number: The parameter value ranges from 1 to 8. (The maximum value varies

depending on customization projects.)

Latitude: accurate to 6 digits placed after the decimal point. For example, 22.512517 or -

22.512517.

Longitude: accurate to 6 digits placed after the decimal point. For example, 114.057200

or -114.057200.

Enter Geo-fence alert: The parameter value is 0 or 1. 0: An alert will not be generated

when the device enters the geo-fence. 1: An alert will be generated when the device

enters the geo-fence.

Exit Geo-fence alert: The parameter value is 0 or 1. 0: An alert will not be generated when



the device exits the geo-fence. 1: An alert will be generated when the device exits the

geo-fence.

If the command only contains the parameter Geo-fence number, related geo-fences will

be deleted.

If the geo-fence is circular, the command to be sent is B11,Geo-fence

number,Latitude,Longitude,Radius (meter),Enter Geo-fence alert,Exit Geo-fence alert.


Example

GPRS Sending @@I59,353358017784062,B11,5,31,22.913458,114.083183,100,1,1*F5\r\n


3.23 Setting the Idling Alert – B14

GPRS Sending B14,Consecutive speed time (second),Speed (km/h),Alert time (second)

GPRS Reply B14,OK

Description Consecutive speed time: The parameter value ranges from 0 to 60000. Unit: second. The

default parameter value is 180.

Speed: The parameter value ranges from 0 to 200. Unit: km/h. The default parameter

value is 5.

Alert time: The parameter value ranges from 0 to 60000. Unit: second. The default

parameter value is 120.

If you want to read the parameters, send B14.


Example

GPRS Sending @@I27,353358017784062,B14,180,5,120*AE\r\n


3.24 Setting Driver Fatigue Parameters – B15

GPRS Sending B15,Consecutive driving time (minute),Alert time (second),Rest time (minute)

GPRS Reply B15,OK

Description Consecutive driving time: The parameter value ranges from 0 to 1000. Unit: minute. The

default parameter value is 240.

Alert time: The parameter value ranges from 0 to 60000. Unit: second. The default


Rest time: The parameter value ranges from 0 to 1000. Unit: minute. The default




Example

GPRS Sending @@I27,353358017784062,B15,240,300,20*79\r\n




3.25 Setting the Consecutive Time of the Speeding Alert – B16

GPRS Sending B16,Consecutive speeding alert time,Time for recovering normal speed

GPRS Reply B16,OK

Description Consecutive speeding alert time: The parameter value ranges from 1 to 30000. The

default parameter value is 15. Unit: second.

Time for recovering normal speed: The parameter value ranges from 1 to 30000. The

default parameter value is 15. Unit: second.


When the driving speed exceeds the speeding alert threshold and the consecutive

speeding time is greater than the preset value, a speeding alert will be generated.

When the driving speed is lower than the speeding alert threshold and the consecutive

time is greater than the preset value, a normal speed recovery event will be generated.


Example

GPRS Sending @@I27,353358017784062,B15,240,300,20*79\r\n


3.26 Setting the Anti-Theft Function – B21

GPRS Sending B21,Status

GPRS Reply B21,OK

Description Status = 1: function enabled (default).

Status = 0: function disabled.


Example

GPRS Sending @@C27,353358017784062,B21,1*BE\r\n

GPRS Reply $$C28,353358017784062,B21,OK*F0\r\n

3.27 Setting the Camera Timer – B30

GPRS Sending B30,T

GPRS Reply B30,OK

Description T: The parameter value ranges from 0 to 65535. When the parameter value is 0, the

camera timer is not set and there is no delay when a photo is actually taken.



Example

GPRS Sending @@C27,353358017784062,B30,1*BE\r\n

GPRS Reply $$C28,353358017784062,B30,OK*F0\r\n



3.28 Turning off the LED Indicator – B31

GPRS Sending B31,A

GPRS Reply B31,OK

Description A = 00: The device's LED indicator is turned on (default). The LED indicator can be used to

confirm the device's running status.

A = 10: The device's LED indicator is turned off.


Example

GPRS Sending @@J28,353358017784062,B31,10*F7\r\n

GPRS Reply $$J28,353358017784062,B31,OK*F8\r\n

3.29 Setting a Log Interval – B34

GPRS Sending B34,Log interval

GPRS Reply B34,OK

Description Set the interval for recording data to device's memory when the GPS signal is valid. When

there is no GPS signal, data will not be recorded. Recorded logs can only be read by

GPSLog or Meitrack Manager software.

Log interval = 0: function disabled (default).

Log interval = [1…65535]: function enabled. Set the log interval. Unit: second.


Example

GPRS Sending @@N28,353358017784062,B34,60*03\r\n

GPRS Reply $$N28,353358017784062,B34,OK*FF\r\n

3.30 Setting the SMS Time Zone – B35

GPRS Sending B35,SMS minute

GPRS Reply B35,OK

Description The default time zone of the device is GMT 0. You can run the B35 command to change

the time zone of an SMS report to the local time zone. The time zone of an SMS report is

different from that of a GPRS data packet.

SMS minute = 0: The time zone is GMT 0.

SMS minute = [-32768...32767], set time zones.


Example

GPRS Sending @@O29,353358017784062,B35,480*3C\r\n

GPRS Reply $$O28,353358017784062,B35,OK*01\r\n

After the above command is sent successfully, the device's SMS time zone will be changed

to UTC+08:00 (China time zone).



3.31 Setting the GPRS Time Zone – B36

GPRS Sending B36,GPRS minute

GPRS Reply B36,OK

Description GPRS minute = 0: The time zone is GMT 0 (default). The MS02 platform can automatically

detect users' time zone, so that the GPRS time zone does not need to be changed. Please

maintain the default GPRS time zone at GMT 0. If the GPRS time zone is changed, data

will be inaccurate.

GPRS minute = [-32768...32767]: Set time zones.


Example

GPRS Sending @@P29,353358017784062,B36,480*3E\r\n


After the above command is sent successfully, the GPRS time zone will be changed to

UTC+08:00 (China time zone).

3.32 Setting the Auto Sleep Function – B37

GPRS Sending B37,X

GPRS Reply B37,OK

Description X: The parameter value is 0 or 1. 0: The auto sleep mode is disabled.

The default parameter value is 1. The device will automatically enter the deep sleep mode

when the following conditions are met: (a) When the device detects that the ACC is off

and it stops moving; and (b) The voltage of the external power supply is smaller than 11.4

V or 24.8 V.


Example

GPRS Sending @@P27,353358017784062,B37,0*D1\r\n


3.33 Setting the Auto Sleep Voltage – B38

GPRS Sending B38,V

GPRS Reply B38,OK

Description V: The parameter value ranges from 0 to 2400. Voltage value = V/10 V

The default parameter value is 0. The device will enter the sleep mode based on the

voltage of the external power supply. In the sleep mode, the voltage of small vehicles is

11.4 V, and the voltage of large vehicles is 24.8 V.

If you want to read the parameter, send B38.


Example

GPRS Sending @@P29,353358017784062,B39,0*D4\r\n




3.34 Setting Event Photographing Parameters – B46

GPRS Sending B46,E,T,S,U,D

GPRS Reply B46,OK

Description E: Indicates the event code. For example, the SOS event code is 1.

T: Indicates the photographing time interval. The parameter value ranges from 0 to 65535.

Unit: minute.

S: Indicates the number of photos. The parameter value ranges from 0 to 65535.

U: Whether to automatically upload photos. The parameter value is 0 or 1. 0: Photos will

not be uploaded automatically. 1: Photos will be uploaded automatically.

D: Whether to delete photos after the uploading task is completed. The parameter value

is 0 or 1. 0: Photos will not be deleted after the uploading task is completed. 1: Photos

will be deleted after the uploading task is completed.

If you want to delete the parameters, send B46,E.



Example

GPRS Sending @@P35,353358017784062,B46,1,1,1,0,1*44\r\n


3.35 Determining Vehicle Status by ACC Status – B60

GPRS Sending B60,X

GPRS Reply B60,OK

Description X = 1: function enabled. When the device detects that the ACC is off, the device's

longitude and latitude will not be updated. This helps avoid static drift.

X = 0: function disabled (default).

The first positive input of the device is connected to engine detection by default.


Example

GPRS Sending @@U27,353358017784062,B60,1*D3\r\n

GPRS Reply $$U28,353358017784062,B60,OK*05\r\n

3.36 Setting SMS Event Characters – B91

GPRS Sending B91,SMS event code,SMS header

GPRS Reply B91,OK

Description Header: a maximum of 16 bytes


Example

GPRS Sending @@R31,353358017784062,B91,1,SOS*F0\r\n

GPRS Reply $$R28,353358017784062,B91,OK*06\r\n

After the above command is sent successfully and the SOS button (input 1) is pressed, the



device will send an SMS alert whose header is SOS to preset authorized phone numbers.

3.37 Setting a Photographing Event Flag – B96

GPRS Sending B96,Photographing event flag

GPRS Reply B96,OK

Description Set one or multiple photographing events. When a preset event happens, a photo will be

taken and then saved in the Micro SD card.

After you press the SOS button, a photo will be taken and then saved into the Micro SD

card by default. If you want to read photos, send the D00 or D01 command.


Example

GPRS Sending @@A42,353358017784062,B96,0000000000000001*95\r\n

GPRS Reply $$A28,353358017784062,B96,OK*FA\r\n

3.38 Reading a Photographing Event Flag – B97

GPRS Sending B97

GPRS Reply B97,Photographing event flag

Description This command is used to know which event supports he function for taking photos.


Example

GPRS Sending @@C25,353358017784062,B97*6C\r\n

GPRS Reply $$C42,353358017784062,B97,0000000000000001*60\r\n

3.39 Setting Event Authorization – B99

GPRS Sending B99,/,/,, [Event code 1]…[Event code n]

B99,/,/,, [Event code 1]…[Event code n]

B99,/,, [Event code 1]…[Event code n]

0000,B99,/,, [Event code 1]…[Event code n]

B99,/,, [Event code 1]…[Event code n].



GPRS Reply B99,/,,, [Event code

1]…[Event code n]

B99,/,,, [Event code

1]…[Event code n]

B99,/,[Event code 1]…[Event code n]







Description Fields SMS, CALL, CAMERA, GPRS, BUZZER, OUT1, and OUT2 can be presented by 0–6 in

decimal string.

Operation codes GET, SET, ADD, and DEL can be presented by 0–3 in decimal string. These

characters are not case-sensitive.

Note: Before using the B99 command to set the SMS or CALL event code, ensure that an

authorized phone number is set in advance by using the A71 command or the parameter

configuration tool. The device will compare the authorized phone number included in the

B99 command with the authorized phone number (excluding +86 characters) set before.

If the phone numbers are the same, the new event code will be stored. If not, an SMS

with error information will be sent.


Example

GPRS Sending @@B34,863070010825791,B99,gprs,get*BC\r\n

GPRS Reply $$B33,863070010825791,B99,1,17,18*B5\r\n

3.40 Controlling Output Status – C01

GPRS Sending C01,Speed,ABCDE

GPRS Reply C01,OK

Description Speed = 0: No speed limit exists. When the device receives the command, the function

will take effect immediately.

Speed = [1...255]: set the speed limit. When the driving speed is lower than the speed

limit, the function will take effect. Unit: km/h.

A = 0: Close output (output 1) - open drain.

A = 1: Open output (output 1) - connect to GND.

A = 2: Remain previous status.

B = 0: Close output (output 2) - open drain.

B = 1: Open output (output 2) - connect to GND.

B = 2: Remain previous status.

C = 0: Close output (output 3) - open drain.

C = 1: Open output (output 3) - connect to GND.

C = 2: Remain previous status.

D = 0: Close output (output 4) - open drain.

D = 1: Open output (output 4) - connect to GND.

D = 2: Remain previous status.

E = 0: Close output (output 5) - open drain.

E = 1: Open output (output 5) - connect to GND.

E = 2: Remain previous status.


Example



GPRS Sending @@M34,353358017784062,C01,20,10122*18\r\n

GPRS Reply $$M28,353358017784062,C01,OK*F9\r\n

3.41 Notifying the Device of Sending an SMS – C02

GPRS Sending C02,X,Phone number,Content

GPRS Reply C02,OK

Description This command is used for the platform to notify the device of sending an SMS to a mobile

phone.

X = 0: in TEXT encoding mode

X = 1: in Unicode encoding mode

Phone number: a maximum of 16 digits

Content: a maximum of 140 characters

After receiving this message, the device will send the Content parameter to specified

phone numbers.


Example

GPRS Sending @@f47,353358017784062,C02,0,15360853789,Meitrack*B1\r\n

GPRS Reply $$f28,353358017784062,C02,OK*13\r\n

3.42 Setting a GPRS Event Transmission Mode – C03

GPRS Sending C03,X

GPRS Reply C03,OK

Description X = 0: automatic event report (default)

X = 1: Before another event is transmitted, existing event reports need to be confirmed

and deleted on the server by using the AFF command. Select this mode when the GPRS

connection uses UDP.


Example

GPRS Sending @@f27,353358017784062,C03,0*E1\r\n

GPRS Reply $$f28,353358017784062,C03,OK*14\r\n

3.43 Registering a Temperature Sensor Number – C40

GPRS Sending C40,SN1 & Number 1,SN2 & Number 2,…,SNn & Number n

GPRS Reply C40,SN1 & Number 1 & Registration result,SN2 & Number 2 & Registration result,…SNn &

Number n & Registration result

Description Commands C40 to C46 are used to read or set a temperature sensor.

Perform the following steps to connect to a temperature sensor:

1) Check whether the temperature sensor number included in GPRS data in AAA format

is 0.



2) If the number is 0, it means the temperature sensor is not numbered. Then send the

C42 command to read the mappings of sensor SNs and numbers.

3) Use the C40 command to number all sensors and bind related information in the

database, such as the IMEI number, SN, number, and customized name, so that you

can view the mappings from the platform.

4) If a high or low temperature alert is required, send the C43 command to set the

temperature threshold and customize a name. Y

Documents

MEITRAK T633L GPRS Protocol - GPS Muti-Network Tracking...Subproject GPRS Protocol Total Pages 49 Version V1.0 Confidential Internal Documentation MEITRACK T633L GPRS Protocol